Subwoofer shaft for satellite.
The TPOLE90-20 provides the sturdiest and most reliable means of mounting TURBOSOUND full-range loudspeakers with a standard 35 mm pole mount above TSP and TMS series subwoofers.
Made from a lightweight but rugged steel pole, the 90 cm (35") TPOLE90-20 features an M20 threaded attachment that screws securely into the subwoofer for greater stability.
90 cm lightweight steel pole
M20 threaded screw attachment for stability
Mounts mid-high loudspeaker above subwoofer
If you need this, you already know it, so you should probably order it soon.